1 /* 2 * Copyright (c) 2021 Cypress Semiconductor Corporation (an Infineon company) or 3 * an affiliate of Cypress Semiconductor Corporation 4 * 5 * SPDX-License-Identifier: Apache-2.0 6 */ 7 8 #include <zephyr/kernel.h> 9 #include <zephyr/device.h> 10 #include <zephyr/pm/pm.h> 11 #include <zephyr/logging/log.h> 12 13 #include <cyhal_syspm.h> 14 #include <cyhal_lptimer.h> 15 16 LOG_MODULE_REGISTER(soc_power, CONFIG_SOC_LOG_LEVEL); 17 18 /* 19 * Called from pm_system_suspend(int32_t ticks) in subsys/power.c 20 * For deep sleep pm_system_suspend has executed all the driver 21 * power management call backs. 22 */ pm_state_set(enum pm_state state,uint8_t substate_id)23void pm_state_set(enum pm_state state, uint8_t substate_id) 24 { 25 ARG_UNUSED(substate_id); 26 27 /* Set BASEPRI to 0 */ 28 irq_unlock(0); 29 30 switch (state) { 31 case PM_STATE_SUSPEND_TO_IDLE: 32 LOG_DBG("Entering PM state suspend to idle"); 33 cyhal_syspm_sleep(); 34 break; 35 case PM_STATE_SUSPEND_TO_RAM: 36 LOG_DBG("Entering PM state suspend to RAM"); 37 cyhal_syspm_deepsleep(); 38 39 /* 40 * The HAL function doesn't clear this bit. It is a problem 41 * if the Zephyr idle function executes the wfi instruction 42 * with this bit set. We will always clear it here to avoid 43 * that situation. 44 */ 45 SCB_SCR &= (uint32_t)~SCB_SCR_SLEEPDEEP_Msk; 46 break; 47 default: 48 LOG_DBG("Unsupported power state %u", state); 49 break; 50 } 51 } 52 pm_state_exit_post_ops(enum pm_state state,uint8_t substate_id)53void pm_state_exit_post_ops(enum pm_state state, uint8_t substate_id) 54 { 55 ARG_UNUSED(substate_id); 56 57 switch (state) { 58 case PM_STATE_SUSPEND_TO_IDLE: 59 case PM_STATE_SUSPEND_TO_RAM: 60 break; 61 62 default: 63 break; 64 } 65 } 66 ifx_pm_init(void)67int ifx_pm_init(void) 68 { 69 /* System Domain Idle Power Mode Configuration */ 70 Cy_SysPm_SetDeepSleepMode(CY_SYSPM_MODE_DEEPSLEEP); 71 72 return cyhal_syspm_init(); 73 } 74
